HOWELL DOUGLAS K

PrivateCIK: 1222374

Location

ITASCA, IL

HOWELL DOUGLAS K

Filed: 6/24/2026ACC: 0000354190-26-000173

InsiderHOWELL DOUGLAS KCIK 1222374

→

IssuerARTHUR J. GALLAGHER & CO.CIK 354190

Officer· VP & Chief Financial Officer

Since Mar 2026

-12.95K

Net shares

Net seller

$0.00

Total acquired

0

Open market trades

0B · 0S

1

Total transactions

12.95K disposed

Non-Derivative Transactions0

No non-derivative transactions reported

Derivative Transactions1

Notional Stock Units

Direct

I · I

Converts to

Common Stock

12.95K shares

Shares

−12.95K

Strike price

0

Held after

185.95K

Exercisable

—

6/22/2026

Security	Converts To	Date	Type	Shares	Strike Price	Exercisable	Held After
Notional Stock Units Direct	Common Stock12.95K shares	6/22/2026	I · I	−12.95K	0	—	185.95K

Non-Derivative Holdings (Post-Transaction)3

Common Stock

Indirect

Shares owned3.17K

Common Stock

Direct

Shares owned106.81K

Common Stock

Indirect

Shares owned491.13

Total

106.81K direct·3.66K indirect110.46K

Security Title	Shares Owned	Ownership Type
Common Stock	3.17K	Indirect
Common Stock	106.81K	Direct
Common Stock	491.13	Indirect
Total	110.46K	106.81K direct·3.66K indirect

Derivative Holdings (Post-Transaction)9

Non-qualified Stock Option

Direct

Underlying security

Common Stock

Underlying shares

12.73K

Shares owned

12.73K

Exercise price

243.54

Expiration

—

Exercise window

—

Non-qualified Stock Option

Direct

Underlying security

Common Stock

Underlying shares

12.11K

Shares owned

12.11K

Exercise price

177.09

Expiration

—

Exercise window

—

Non-qualified Stock Option

Direct

Underlying security

Common Stock

Underlying shares

20.74K

Shares owned

20.74K

Exercise price

228.20

Expiration

—

Exercise window

—

Notional Stock Units

Direct

Underlying security

Common Stock

Underlying shares

208.34K

Shares owned

208.34K

Exercise price

0

Expiration

—

Exercise window

—

Non-qualified Stock Option

Direct

Underlying security

Common Stock

Underlying shares

31.27K

Shares owned

31.27K

Exercise price

127.90

Expiration

—

Exercise window

—

Phantom Stock

Direct

Underlying security

Common Stock

Underlying shares

6.89K

Shares owned

6.89K

Exercise price

Expiration

—

Exercise window

—

Non-qualified Stock Option

Direct

Underlying security

Common Stock

Underlying shares

14.54K

Shares owned

14.54K

Exercise price

158.56

Expiration

—

Exercise window

—

Non-qualified Stock Option

Direct

Underlying security

Common Stock

Underlying shares

13.88K

Shares owned

13.88K

Exercise price

337.74

Expiration

—

Exercise window

—

Non-qualified Stock Option

Direct

Underlying security

Common Stock

Underlying shares

17.13K

Shares owned

17.13K

Exercise price

86.17

Expiration

—

Exercise window

—

Total

Underlying

337.63K

Owned

337.63K

Security	Underlying	Exercise Price	Exercise Window	Expiration	Underlying Shares	Shares Owned
Non-qualified Stock Option Direct	Common Stock	243.54	—	—	12.73K	12.73K
Non-qualified Stock Option Direct	Common Stock	177.09	—	—	12.11K	12.11K
Non-qualified Stock Option Direct	Common Stock	228.20	—	—	20.74K	20.74K
Notional Stock Units Direct	Common Stock	0	—	—	208.34K	208.34K
Non-qualified Stock Option Direct	Common Stock	127.90	—	—	31.27K	31.27K
Phantom Stock Direct	Common Stock		—	—	6.89K	6.89K
Non-qualified Stock Option Direct	Common Stock	158.56	—	—	14.54K	14.54K
Non-qualified Stock Option Direct	Common Stock	337.74	—	—	13.88K	13.88K
Non-qualified Stock Option Direct	Common Stock	86.17	—	—	17.13K	17.13K
Total					337.63K	337.63K